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  1. Article ; Online: Quantifying Efficiency of Remote Excitation for Surface-Enhanced Raman Spectroscopy in Molecular Junctions.

    Liao, Shusen / Zhu, Yunxuan / Ye, Qian / Sanders, Stephen / Yang, Jiawei / Alabastri, Alessandro / Natelson, Douglas

    The journal of physical chemistry letters

    2023  Volume 14, Issue 33, Page(s) 7574–7580

    Abstract: Surface-enhanced Raman spectroscopy (SERS) is enabled by local surface plasmon resonances (LSPRs) in metallic nanogaps. When SERS is excited by direct illumination of the nanogap, the background heating of the lattice and electrons can prevent further ... ...

    Abstract Surface-enhanced Raman spectroscopy (SERS) is enabled by local surface plasmon resonances (LSPRs) in metallic nanogaps. When SERS is excited by direct illumination of the nanogap, the background heating of the lattice and electrons can prevent further manipulation of the molecules. To overcome this issue, we report SERS in electromigrated gold molecular junctions excited remotely: surface plasmon polaritons (SPPs) are excited at nearby gratings, propagate to the junction, and couple to the local nanogap plasmon modes. Like direct excitation, remote excitation of the nanogap can generate both SERS emission and an open-circuit photovoltage (OCPV). We compare the SERS intensity and the OCPV in both direct and remote illumination configurations. SERS spectra obtained by remote excitation are much more stable than those obtained through direct excitation when the photon count rates are comparable. By statistical analysis of 33 devices, the coupling efficiency of remote excitation is calculated to be around 10%, consistent with the simulated energy flow.
    Language English
    Publishing date 2023-08-17
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.3c01948
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Porcine deltacoronavirus resists antibody neutralization through cell-to-cell transmission.

    Xia, Sijin / Xiao, Wenwen / Zhu, Xuerui / Liao, Shusen / Guo, Jiahui / Zhou, Junwei / Xiao, Shaobo / Fang, Puxian / Fang, Liurong

    Emerging microbes & infections

    2023  Volume 12, Issue 1, Page(s) 2207688

    Abstract: ... ...

    Abstract ABSTRACT
    MeSH term(s) Humans ; Animals ; Swine ; Deltacoronavirus ; Coronavirus/physiology ; Antibodies, Neutralizing ; Coronavirus Infections/veterinary ; Swine Diseases
    Chemical Substances Antibodies, Neutralizing
    Language English
    Publishing date 2023-05-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2681359-2
    ISSN 2222-1751 ; 2222-1751
    ISSN (online) 2222-1751
    ISSN 2222-1751
    DOI 10.1080/22221751.2023.2207688
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Porcine deltacoronavirus uses heparan sulfate as an attachment receptor.

    Xiao, Wenwen / Huang, Wen / Chen, Chaoqun / Wang, Xunlei / Liao, Shusen / Xia, Sijin / Fang, Puxian / Xiao, Shaobo / Fang, Liurong

    Veterinary microbiology

    2022  Volume 276, Page(s) 109616

    Abstract: Porcine deltacoronavirus (PDCoV) is a newly emerging swine enteropathogenic coronavirus with extensive tissue tropism and cross-species transmission potential. Heparan sulfate (HS) is a complex polysaccharide ubiquitously expressed on cell surfaces and ... ...

    Abstract Porcine deltacoronavirus (PDCoV) is a newly emerging swine enteropathogenic coronavirus with extensive tissue tropism and cross-species transmission potential. Heparan sulfate (HS) is a complex polysaccharide ubiquitously expressed on cell surfaces and the extracellular matrix and acts as an attachment factor for many viruses. However, whether PDCoV uses HS as an attachment receptor is unclear. In this study, we found that treatment with heparin sodium or heparinase Ⅱ significantly inhibited PDCoV binding and infection among LLC-PK1 and IPI-2I cells. Attenuation of HS sulfuration by sodium chlorate also impeded PDCoV binding and infection. Moreover, we demonstrated that HS functioned independently of amino peptidase N (APN), a functional PDCoV receptor, in PDCoV infection. Molecular docking revealed that the S1 subunit of the PDCoV spike protein might be a putative region for HS binding. Taken together, these results firstly confirmed that HS is an attachment receptor for PDCoV infection, providing new insight into better understanding the mechanisms of PDCoV-host interactions.
    Language English
    Publishing date 2022-11-28
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 753154-0
    ISSN 1873-2542 ; 0378-1135
    ISSN (online) 1873-2542
    ISSN 0378-1135
    DOI 10.1016/j.vetmic.2022.109616
    Database MEDical Literature Analysis and Retrieval System OnLINE

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